- 试题详情及答案解析
- ---There a lot of traffic on the city roads. It’s hard to drive.
---Look out! Don’t drive too fast. You can never be too careful.- 答案：B
- 试题分析：根据主语是a lot of traffic不可数名词故谓语动词用单数；句意：在城市的道路上，有许多交通，很难：开车，---小心，不要开得太快，你不能不小心。结合句意，故选B
考点：考查there be 句型。